package kr.ac.kaist.pointdaproject;

import java.util.Locale;

import android.app.ActionBar;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Fragment;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.content.Intent;
import android.location.LocationManager;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.StrictMode;
import android.support.v13.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends Activity implements ActionBar.TabListener {
	private static final String TAG = "MainActivity";
	
	/**
	 * The {@link android.support.v4.view.PagerAdapter} that will provide
	 * fragments for each of the sections. We use a {@link FragmentPagerAdapter}
	 * derivative, which will keep every loaded fragment in memory. If this
	 * becomes too memory intensive, it may be best to switch to a
	 * {@link android.support.v13.app.FragmentStatePagerAdapter}.
	 */
	SectionsPagerAdapter mSectionsPagerAdapter;

	/**
	 * The {@link ViewPager} that will host the section contents.
	 */
	ViewPager mViewPager;

	private WifiManager mWifimgr;
	private static final int CHECK_GPS_STATE = 1;
	private static final int CHECK_WIFI_STATE = 2;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);

		// Set up the action bar.
		final ActionBar actionBar = getActionBar();
		actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

		// Create the adapter that will return a fragment for each of the three
		// primary sections of the activity.
		mSectionsPagerAdapter = new SectionsPagerAdapter(getFragmentManager());

		// Set up the ViewPager with the sections adapter.
		mViewPager = (ViewPager) findViewById(R.id.pager);
		mViewPager.setAdapter(mSectionsPagerAdapter);

		// When swiping between different sections, select the corresponding
		// tab. We can also use ActionBar.Tab#select() to do this if we have
		// a reference to the Tab.
		mViewPager
		.setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
			@Override
			public void onPageSelected(int position) {
				actionBar.setSelectedNavigationItem(position);
			}
		});

		// For each of the sections in the app, add a tab to the action bar.
		for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
			// Create a tab with text corresponding to the page title defined by
			// the adapter. Also specify this Activity object, which implements
			// the TabListener interface, as the callback (listener) for when
			// this tab is selected.
			actionBar.addTab(actionBar.newTab()
					.setText(mSectionsPagerAdapter.getPageTitle(i))
					.setTabListener(this));
		}
		
		if (android.os.Build.VERSION.SDK_INT > 9) {
			StrictMode.ThreadPolicy policy = 
					new StrictMode.ThreadPolicy.Builder().permitAll().build();
			StrictMode.setThreadPolicy(policy);
		}		
		
		mHandler.sendEmptyMessageDelayed(CHECK_GPS_STATE, 1000);
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {

		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		
		Intent intent;
		
		switch(item.getItemId())
		{
		case R.id.action_addcard:
			intent = new Intent(this, CardRegistration.class);
			startActivity(intent);
			
			return true;
		case R.id.action_setup:
			intent = new Intent(this, Setup.class);
			startActivity(intent);
			return true;
		default:
			break;
		}
	
		return super.onOptionsItemSelected(item);
	}

	@Override
	public void onTabSelected(ActionBar.Tab tab,
			FragmentTransaction fragmentTransaction) {
		// When the given tab is selected, switch to the corresponding page in
		// the ViewPager.
		mViewPager.setCurrentItem(tab.getPosition());
	}

	@Override
	public void onTabUnselected(ActionBar.Tab tab,
			FragmentTransaction fragmentTransaction) {
	}

	@Override
	public void onTabReselected(ActionBar.Tab tab,
			FragmentTransaction fragmentTransaction) {
	}

	private void checkGPS() {
		LocationManager lm = (LocationManager) getSystemService(LOCATION_SERVICE);
		if(lm != null) {
			if(lm.isProviderEnabled(LocationManager.GPS_PROVIDER) == false) {
				AlertDialog.Builder builder = new AlertDialog.Builder(this);
				builder.setTitle(R.string.loc_disabled);
				builder.setMessage(R.string.loc_disabled_desc);
				builder.setPositiveButton(R.string.settings, new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {
						Intent gpssettingIntent = new Intent(android.provider.Settings.ACTION_LOCATION_SOURCE_SETTINGS);
						startActivity(gpssettingIntent);
						
						mHandler.sendEmptyMessageDelayed(CHECK_WIFI_STATE, 1000);
					}
				});
				builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {
						/*
						 * There is no action.
						 * */
					}
				});
				builder.create();
				builder.show();			
			} else {
				mHandler.sendEmptyMessageDelayed(CHECK_WIFI_STATE, 1000);
			}
		}
	}
	
	private void checkWiFi() {
		mWifimgr = (WifiManager) getSystemService(WIFI_SERVICE);
		if (mWifimgr != null) {
			if (!mWifimgr.isWifiEnabled()) {
				AlertDialog.Builder builder = new AlertDialog.Builder(this);
				builder.setTitle(R.string.wifi_disabled);
				builder.setMessage(R.string.wifi_disabled_desc);
				builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {
						mWifimgr.setWifiEnabled(true);
						try {
							Thread.sleep(8000);
						} catch (InterruptedException e) {
							// TODO Auto-generated catch block
							e.printStackTrace();
						} 
						Toast.makeText(MainActivity.this, R.string.wifi_changed_desc,Toast.LENGTH_SHORT).show();
					}
				});
				builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
					public void onClick(DialogInterface dialog, int whichButton) {
						/*
						 * There is no action.
						 * */
					}
				});
				builder.create();
				builder.show();		
			}
		}
	}

    Handler mHandler = new Handler(new HandlerCallback());
    	class HandlerCallback implements Handler.Callback {
	    	@Override
	    	public boolean handleMessage(Message msg){
	    		switch(msg.what) {
		    		case CHECK_GPS_STATE:
		    			checkGPS();
		    			break;
		    		case CHECK_WIFI_STATE:
		    			checkWiFi();
		    			break;
	    		}
	    		return true;
	    	}
    	};

	/**
	 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
	 * one of the sections/tabs/pages.
	 */
	public class SectionsPagerAdapter extends FragmentPagerAdapter {

		public SectionsPagerAdapter(FragmentManager fm) {
			super(fm);
		}

		@Override
		public Fragment getItem(int position) {
			// getItem is called to instantiate the fragment for the given page.
			// Return a PlaceholderFragment (defined as a static inner class
			// below).
			if(position == 0)
			{
				return CardListRecommendFragment.newInstance();
			}
			else
			{
				return CardListAllFragment.newInstance();
			}
		}

		@Override
		public int getCount() {
			// Show 2 total pages.
			return 2;
		}

		@Override
		public CharSequence getPageTitle(int position) {
			Locale l = Locale.getDefault();
			switch (position) {
			case 0:
				return getString(R.string.title_section1).toUpperCase(l);
			case 1:
				return getString(R.string.title_section2).toUpperCase(l);
			}
			return null;
		}
	}



}
